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Subtract 9/42 from 9/4

1st number: 2 1/4, 2nd number: 9/42

9/4 - 9/42 is 57/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84
  2. For the 1st fraction, since 4 × 21 = 84,
    9/4 = 9 × 21/4 × 21 = 189/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    9/42 = 9 × 2/42 × 2 = 18/84
  4. Subtract the two fractions:
    189/84 - 18/84 = 189 - 18/84 = 171/84
  5. After reducing the fraction, the answer is 57/28
  6. In mixed form: 21/28

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